Stoker-operating means



Feb. 24. 1925 1,527,877

N. R. KENDER STOKER OPERATING MEANS Filed May 10, 1923 mm /V/502Zf I v Patented Feb. 24, 1925.

NEILSON ROYKINDER, OF WEST FRANKFURT, ILLINOIS.

STOKER-OBERATING MEANS.

Application filed May 10,

To all' wh om it may concern:

Be it known that I, NELSON ROY. KINDE'R', a citizen of the United States, residing at West Frankfort, in the county of. Franklin and State OfIlllllQlSfllZLVB invented certain new and useful Improvements inStokenOpcrating Means; and I do declare the follow ing, to be a: full, clear, and exact description of the invention, suchas will enable others skilled in the art to which. it appertains to make and usethe same.

My invention relates to stoker operating mechanisms of the type in which a driven proceeding and receding. rod or other mem-. her, is used for alternately moving an arm or otherstoker actuator in opposite directions, the object being, to provide a simple, inexpensive and efficient association of parts for permitting more or lesslost motion between the driven proceeding and receding member and-the-st-oker actuato r,so as to operatethe stokermore or less vigorously, ac cording to requirements.

ith' the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimechthe description being supplemented by the accompanying drawing.

Figure 1 is a side elevation showing a stoker' operating mechanism constructed in accordance with-my invention.

Figure 2' is a horizontal sectional view on line 2.2of Fig. 1. V

Figure 3'isi an enlarged vertical; sectional View as: indicated by line 33 of Fig. 2.

In the drawing above briefly described, the numeral 1 designates an arm extending from a shaft 2 and constituting an actuator for a stoker, said arm being formed with a guide 3. A rod 4 passes loosely through the guide 3 and means are provided for con-- stantly imparting a proceeding and receding motion to said rod, a pitman 5 and driven eccentric 6 being shown for this purpose. The eccentric is mounted on a shaft 7 which may be rotated by any desired means.

In the present showing, the rod 4 is provided with a shoulder in the form of a collar 8, to strike the guide 3 and move the actuator 1 in one direction, while a body 9 is adjustably mounted on said rod to strike the actuator and move it in the opposite direction. It will be seen that if the collar 8 and the body 9 are in close relation with the actuator, the latter will be rather vigorously operatedin a 1923. Serial No. 638,057.

operated by the rod 4. However, iflost motion is permitted between the rod andactuator, the stoker will be operated more slowly. I provide means whereby adjustments ofthe body 9 along the rod, may be automatically effected, this adjusting means-being adapted to be operated by a balanced-draft control associated with the furnace on which the stoker is used, or other automatic control means may be used. It thus follows that if the fire needs a comparatively large amount of fuel, the body 9 is automatically moved into close relation with the actuator 1 and thus the reciprocation of the rod will operatethe stoker to maximum capacity, but as less fuel is gradually needed, the body 9 isautomatically adjusted away from the actuator land consequently the stoker will be manner to supply only the required amount. I

In the preferred form ofconstruction, the bore 10 of the body 9 is threaded only throughout a portion of its length, as dis closed at 11 in Fig. 3 and the unthreaded portion of said body extends beyond the threads 12 on the rod 41-, with which the threads 11 are engaged. Thus, it will be seen that-the threads 12-are prevented from dragging upon the guide 3 and consequently there isno possibility of injuring them. An operating chain or'other flexible element 13 is wound around the cylindrical. outer surface of the body 9, in the preferred form of construction, one end of said chain being passecl over a sheave 14 and having. a weight 15, while the otherend of said chain is connected with a reducing sheave 16, from which a chain or the like 17 leadsto a balanced draft control or other automatic control means. It will thus be seen that as the chain 17 is moved in one direction or the other, the chain 13 will be similarly moved and will consequently rotate the body 9 to effect adjustment thereof on the rod 4.

To insure smooth operation of the chain 13, I prefer to provide the periphery of the body 9 with a helical guide groove 18 in which the chain is received, and any desired means such as the cap screw 19, shown in Fig. 3, may be employed to prevent slipping of'the chain upon the body.

By employing the construction disclosed or a substantial equivalent thereof, it will be obvious that a simple and inexpensive, yet a sensitive and eflicient mechanism has been provided for automatically controlling a stoker of any desired form.

Excellent results are obtainable from the details disclosed and they are therefore preferably followed, but Within the scope of the invention as claimed, numerous changes may be made.

I claim:

1. Stoker control means comprising a stoker actuator adapted to be moved alternately in opposite directions, a driven proceeding and receding member movable with respect to said actuator, a body turnably mounted on said driven member and movable bodily therewith to transmit movement in one direction to said actuator, means adapted to be actuated by an automatic control for turning said body on said driven member, means for utilizing the turning movement of said body to effect adjustment thereof with respect to said stoker actuator, and means for returning said stoker actuator after each movement thereof by said body.

2. Stoker control means comprising a stoker actuator adapted to be moved alternately in opposite directions, a driven proceeding and receding member movable with respect to said actuator, a body threaded on said driven member and adapted to move said stoker actuator in one direction, means adapted to be actuated by an automatic control for turning said body to adjust the same along said driven member and vary its relation with said stoker actuator, and means for returning said stoker actuator after each movement thereof by said body.

3. A structure as specified in claim 1; said control actuated meansincluding a flexible element wound upon said body.

4. A structure as specified in claim 1; said control actuated means including a flexible element wound upon said body, a sheave over which the free endeof said element is wound, and a weight on said free end.

5. Stoker control means comprising a stoker actuator having a guide and adapted to be moved alternately in opposite directions, a driven proceeding and receding rod passing slidably through said guide and having a shoulder to strike said guide and move the actuator in one direction, a body adjustable along said rod and adapted to strike said guide and move the actuator in the other direction, and adjusting means for said body adapted for connection with automatic control means to be operated thereby.

6. Stoker control means comprising a stoker actuator having a guide and adapted to be moved alternately in opposite directions, a driven proceeding and receding rod passing slidably through said guide and having a shoulder to strike said guide and move the actuator in one direction, a body threaded adjustably on said rod and adapted to strike said guide to move the actuator in the other direction, and means adapted for connection to an automatic control for rotating said body to adjust it along said rod.

7. Stoker control means comprising a Stoker actuator having a guide and adapted to be moved alternately in opposite directions, a driven proceeding and receding rod passing slidably through said guide and having a threaded portion, a rotatable body having a bore receiving said rod, said bore being threaded throughout only a portion of its length with its threads engaging the threads of said rod, the unthreaded portion of said body extending toward said guide beyond the threaded portion of the rod to strike said guide and move the actuator in one direction and to prevent the threads of the rod from contacting with said guide, means for returning said actuator and guide after each movement thereof by said body. and means connected with said body and adapted to be operated by an automatic control for rotating and adjusting said body.

In testimony whereof I have hereunto aflixed my signature.

. NELSON ROY KINDER. 

